Display Device Interpupillary and Diopter Adjustment Sequence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices fail to consistently maintain a correct subject distance perception due to the lack of clear order in interpupillary distance and diopter adjustments, leading to potential parallax deviations.
Innovation Solution
A display device with integrated detectors for interpupillary distance measurement and adjustable display units for diopter and interpupillary distance adjustments, where diopter adjustments are performed after interpupillary distance adjustments to ensure accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If diopter adjustment is performed before interpupillary distance adjustment, then diopter can be adjusted to user's eyesight, but parallax deviates due to incorrect interpupillary distance causing subject distance perception to deviate
Solution Approach 1:
The patent applies preliminary action by performing interpupillary distance adjustment before diopter adjustment. The control unit first adjusts the interval between display units to match the user's interpupillary distance, then subsequently performs diopter adjustment. This sequential approach ensures that parallax is established correctly before focusing, preventing subject distance perception deviations that would occur if diopter adjustment were performed first with incorrect interpupillary distance.
2Ease of operation
If both adjustments are automated, then user convenience is improved, but adjustment order complexity increases
Solution Approach 1:
The control unit implements automated sequential control where interpupillary distance adjustment is executed as a preliminary step before diopter adjustment. This automated sequencing eliminates manual intervention while maintaining proper adjustment order, resolving the contradiction between automation convenience and control complexity by embedding the sequence logic within the control unit's automated operation flow.
Data Source
AI summary
A display device includes a pair of display units each including displays 1R and 1L and ocular optical systems 2R and 2L. A first driving unit can change an optical positional relationship between the displays 1R and 1L and the ocular optical systems 2R and 2L. A second driving unit can change an interval between the pair of display units. An interpupillary distance adjustment unit adjusts the interval between the display units by the second driving unit in accordance with a detection result obtained by the interpupillary distance detector. After interpupillary distance adjustment is performed, a diopter adjustment unit performs diopter adjustment related to the display unit by the first driving unit.